Sizing
All NAPOLEON Tungsten rings feature a comfortable fit, with a slightly rounded interior that facilitates easy sliding over the knuckle and reduces pressure on the finger.
Ring Size Chart
| Inside Diameter (mm) | Inside Circumference (mm) | US sizing | Australia/UK sizing |
|---|---|---|---|
| 15.3 | 48 | 4.5 | I 1/2 |
| 15.5 | 48.8 | 4.75 | J 1/4 |
| 15.7 | 49.3 | 5 | J 1/2 |
| 15.9 | 50 | 5.25 | K 1/4 |
| 16.1 | 50.6 | 5.5 | L |
| 16.3 | 51.2 | 5.75 | L 1/4 |
| 16.5 | 51.9 | 6 | M |
| 16.7 | 52.5 | 6.25 | M 1/2 |
| 16.9 | 53.2 | 6.5 | N |
| 17.1 | 53.8 | 6.75 | N 1/2 |
| 17.4 | 54.5 | 7 | O |
| 17.5 | 54.8 | 7.25 | O 1/2 |
| 17.8 | 55.8 | 7.5 | P |
| 18 | 56.5 | 7.75 | P 1/2 |
| 18.2 | 57.2 | 8 | Q |
| 18.4 | 57.7 | 8.25 | Q 1/2 |
| 18.5 | 58.2 | 8.5 | Q 3/4 |
| 18.7 | 58.7 | 8.75 | R 1/4 |
| 18.9 | 59.3 | 9 | R 3/4 |
| 19.2 | 60.4 | 9.25 | S 1/4 |
| 19.4 | 61 | 9.5 | S 3/4 |
| 19.6 | 61.6 | 9.75 | T 1/4 |
| 19.8 | 62.3 | 10 | T 1/2 |
| 20 | 62.9 | 10.25 | U |
| 20.2 | 63.5 | 10.5 | U 1/2 |
| 20.4 | 64.2 | 10.75 | V 1/4 |
| 20.7 | 65 | 11 | V 1/2 |
| 20.9 | 65.5 | 11.25 | W 1/4 |
| 21.1 | 66.2 | 11.5 | W 3/4 |
| 21.2 | 66.7 | 11.75 | X 1/4 |
| 21.5 | 67.5 | 12 | Y |
| 21.7 | 68.1 | 12.25 | Y 1/2 |
| 21.9 | 68.8 | 12.5 | Z |
| 22.1 | 69.4 | 12.75 | Z +1/2 |
| 22.3 | 70.2 | 13 | Z+1 |
| 22.6 | 71 | 13.5 | Z+2 |
| 22.7 | 71.3 | 13.75 | Z+3 |
| 22.9 | 72 | 14 | Z+4 |
| 23.1 | 72.5 | 14.25 | Z+5 |
| 23.2 | 73 | 14.5 | Z+6 |
| 23.5 | 73.7 | 14.75 | Z+7 |
| 23.6 | 74 | 15 | Z+8 |
| 23.9 | 75 | 15.25 | Z+9 |
| 24.3 | 76.3 | 15.5 | Z+10 |
| 24.7 | 77.5 | 15.75 | Z+11 |
| 25.1 | 78.8 | 16 | Z+12 |
| 25.5 | 80.1 | 16.25 | Z+13 |
| 25.9 | 81.4 | 16.5 | Z+14 |
| 26.3 | 82.7 | 16.75 | Z+15 |